Question 1

Divide. $( - 20 ) \div ( - 4 )$

Accepted Answer

A)  $5$ 
B)  $- 4$ 
C)  $3$ 
D)  $- 3$ 
E)  $4$ 
A)  $5$ 
B)  $- 4$ 
C)  $3$ 
D)  $- 3$ 
E)  $4$

Question 2

Perform the indicated operations and simplify. $\left( \frac { - 4 } { 5 } \right) \div \left( - 8 \frac { 1 } { 2 } \right) - \left( \frac { 2 } { - 5 } \right)$

Accepted Answer

A)  $\frac { 42 } { 85 }$ 
B)  $\frac { 43 } { 85 }$ 
C)  $\frac { 6 } { 85 }$ 
D)  $- \frac { 44 } { 85 }$ 
E)  $- \frac { 41 } { 85 }$ 
A)  $\frac { 42 } { 85 }$ 
B)  $\frac { 43 } { 85 }$ 
C)  $\frac { 6 } { 85 }$ 
D)  $- \frac { 44 } { 85 }$ 
E)  $- \frac { 41 } { 85 }$

Question 3

Write the number in scientific notation. 0.0000086

Accepted Answer

A)  $86 \times 10 ^ { - 5 }$ 
B)  $8.6 \times 10 ^ { - 5 }$ 
C)  $8.6 \times 10 ^ { 6 }$ 
D)  $8.6 \times 10 ^ { 5 }$ 
E)  $8.6 \times 10 ^ { - 6 }$ 
A)  $86 \times 10 ^ { - 5 }$ 
B)  $8.6 \times 10 ^ { - 5 }$ 
C)  $8.6 \times 10 ^ { 6 }$ 
D)  $8.6 \times 10 ^ { 5 }$ 
E)  $8.6 \times 10 ^ { - 6 }$

Question 4

Divide. $( + 153 ) \div ( - 9 )$

Accepted Answer

A)  18 
B)  -20 
C)  -17 
D)  19 
E)  -18 
A)  18 
B)  -20 
C)  -17 
D)  19 
E)  -18

Question 5

Perform the indicated operation. $- ( 2 ) - ( 6 )$

Accepted Answer

A)  -7 
B)  -4 
C)  8 
D)  7 
E)  -8 
A)  -7 
B)  -4 
C)  8 
D)  7 
E)  -8

Question 6

Perform the indicated operation. $\left( 2 \times 10 ^ { - 6 } \right) \left( 7 \times 10 ^ { - 10 } \right)$

Accepted Answer

A)  $- 1.5 \times 10 ^ { - 60 }$ 
B)  $14 \times 10 ^ { 15 }$ 
C)  $- 1.4 \times 10 ^ { - 16 }$ 
D)  $1.4 \times 10 ^ { - 14 }$ 
E)  $1.4 \times 10 ^ { - 15 }$ 
A)  $- 1.5 \times 10 ^ { - 60 }$ 
B)  $14 \times 10 ^ { 15 }$ 
C)  $- 1.4 \times 10 ^ { - 16 }$ 
D)  $1.4 \times 10 ^ { - 14 }$ 
E)  $1.4 \times 10 ^ { - 15 }$

Question 7

Compute the value of the expression. $- 19 + ( - 1 ) + ( - 3 ) + 15$

Accepted Answer

A)  0 
B)  9 
C)  -8 
D)  6 
E)  -5 
A)  0 
B)  9 
C)  -8 
D)  6 
E)  -5

Question 8

Perform the indicated operation. $( 13 ) - ( - 5 )$

Accepted Answer

A)  18 
B)  8 
C)  17 
D)  -17 
E)  -8 
A)  18 
B)  8 
C)  17 
D)  -17 
E)  -8

Question 9

Add. $14 + ( - 2 ) + ( - 8 ) + 19 + ( - 3 )$

Accepted Answer

The answer of Add. \(14 + ( - 2 )...

Question 10

Perform the indicated operation. $( + 40 ) - ( - 90 )$

Accepted Answer

A)  140 
B)  -50 
C)  -130 
D)  130 
E)  -140 
A)  140 
B)  -50 
C)  -130 
D)  130 
E)  -140

Question 11

Write $3.5 \times 10 ^ { 4 }$ in decimal form.

Accepted Answer

The answer of Write \(3.5 \times 10 ^ { 4...

Question 12

Perform the indicated operation. $( - 6 ) - ( - 7 ) - ( + 7 )$

Accepted Answer

The answer of Perform the indicated operation. \(( - 6...

Question 13

Find the sum. $- 60$ $\underline { \quad30\quad}$

Accepted Answer

The answer of Find the sum. $- 60$ \(\underline {...

Question 14

Perform the indicated operation. $8 - 8 - 7 + 4 - 4 + 3$

Accepted Answer

A)  -10 
B)  10 
C)  4 
D)  -5 
E)  -4 
A)  -10 
B)  10 
C)  4 
D)  -5 
E)  -4

Question 15

Multiply. $( - 4 ) ( 2 ) ( - 7 ) ( - 9 )$

Accepted Answer

The answer of Multiply. \(( - 4 ) ( 2...

Question 16

Perform the indicated operation (write the result in scientific notation with the decimal part rounded to three significant if necessary). $\left( \frac { 48,000 \times 0.0108 } { 0.0048 } \right) ^ { 2 }$ $\underline { \quad\quad\quad\quad    } $×$\times 10$-

Accepted Answer

The answer of Perform the indicated operation (write the result...

Question 17

Multiply. $( - 8 ) ( 0 )$

Accepted Answer

A)  2 
B)  0 
C)  -8 
D)  1 
E)  8 
A)  2 
B)  0 
C)  -8 
D)  1 
E)  8

Question 18

Add. $( - 6 ) + 1 + ( - 9 ) + 4 + ( - 3 )$

Accepted Answer

A)  -12 
B)  -16 
C)  -15 
D)  -11 
E)  -13 
A)  -12 
B)  -16 
C)  -15 
D)  -11 
E)  -13

Question 19

Write the number in decimal form. $1.88 \times 10 ^ { - 4 }$

Accepted Answer

A)  $0.0188$ 
B)  $18,800$ 
C)  $0.00188$ 
D)  $0.000188$ 
E)  $1,880$ 
A)  $0.0188$ 
B)  $18,800$ 
C)  $0.00188$ 
D)  $0.000188$ 
E)  $1,880$

Question 20

Compute the value of the expression. $8 + ( - 1 ) + ( - 9 ) + ( - 9 ) + 35$

Accepted Answer

The answer of Compute the value of the expression. \(8...

Divide. $( - 20 ) \div ( - 4 )$

Perform the indicated operations and simplify. $\left( \frac { - 4 } { 5 } \right) \div \left( - 8 \frac { 1 } { 2 } \right) - \left( \frac { 2 } { - 5 } \right)$

Write the number in scientific notation. 0.0000086

Divide. $( + 153 ) \div ( - 9 )$

Perform the indicated operation. $- ( 2 ) - ( 6 )$

Perform the indicated operation. $\left( 2 \times 10 ^ { - 6 } \right) \left( 7 \times 10 ^ { - 10 } \right)$

Compute the value of the expression. $- 19 + ( - 1 ) + ( - 3 ) + 15$

Perform the indicated operation. $( 13 ) - ( - 5 )$

Add. $14 + ( - 2 ) + ( - 8 ) + 19 + ( - 3 )$

Perform the indicated operation. $( + 40 ) - ( - 90 )$

Write $3.5 \times 10 ^ { 4 }$ in decimal form.

Perform the indicated operation. $( - 6 ) - ( - 7 ) - ( + 7 )$

Find the sum. $- 60$ $\underline { \quad30\quad}$

Perform the indicated operation. $8 - 8 - 7 + 4 - 4 + 3$

Multiply. $( - 4 ) ( 2 ) ( - 7 ) ( - 9 )$

Perform the indicated operation (write the result in scientific notation with the decimal part rounded to three significant if necessary). $\left( \frac { 48,000 \times 0.0108 } { 0.0048 } \right) ^ { 2 }$ $\underline { \quad\quad\quad\quad }$ × $\times 10$ -

Multiply. $( - 8 ) ( 0 )$

Add. $( - 6 ) + 1 + ( - 9 ) + 4 + ( - 3 )$

Write the number in decimal form. $1.88 \times 10 ^ { - 4 }$

Compute the value of the expression. $8 + ( - 1 ) + ( - 9 ) + ( - 9 ) + 35$

Basic Concepts

The Metric System

Measurement

Polynomials: an Introduction to Algebra

Equations and Formulas

Ratio and Proportion

Graphing Linear Equations

Systems of Linear Equations

Factoring Algebraic Expressions

Quadratic Equations

Geometry

Right Triangle Trigonometry

Trigonometry With Any Angle

Basic Statistics

Binary and Hexadecimal Numbers

Filters

Exam 2: Signed Numbers and Powers of 10

Divide. (−20)÷(−4)( - 20 ) \div ( - 4 )(−20)÷(−4)

Perform the indicated operations and simplify. (−45)÷(−812)−(2−5)\left( \frac { - 4 } { 5 } \right) \div \left( - 8 \frac { 1 } { 2 } \right) - \left( \frac { 2 } { - 5 } \right)(5−4​)÷(−821​)−(−52​)

Write the number in scientific notation. 0.0000086

Divide. (+153)÷(−9)( + 153 ) \div ( - 9 )(+153)÷(−9)

Perform the indicated operation. −(2)−(6)- ( 2 ) - ( 6 )−(2)−(6)

Perform the indicated operation. (2×10−6)(7×10−10)\left( 2 \times 10 ^ { - 6 } \right) \left( 7 \times 10 ^ { - 10 } \right)(2×10−6)(7×10−10)

Compute the value of the expression. −19+(−1)+(−3)+15- 19 + ( - 1 ) + ( - 3 ) + 15−19+(−1)+(−3)+15

Perform the indicated operation. (13)−(−5)( 13 ) - ( - 5 )(13)−(−5)

Add. 14+(−2)+(−8)+19+(−3)14 + ( - 2 ) + ( - 8 ) + 19 + ( - 3 )14+(−2)+(−8)+19+(−3)

Perform the indicated operation. (+40)−(−90)( + 40 ) - ( - 90 )(+40)−(−90)

Write 3.5×1043.5 \times 10 ^ { 4 }3.5×104 in decimal form.

Perform the indicated operation. (−6)−(−7)−(+7)( - 6 ) - ( - 7 ) - ( + 7 )(−6)−(−7)−(+7)

Find the sum. −60- 60−60 30‾\underline { \quad30\quad}30​

Perform the indicated operation. 8−8−7+4−4+38 - 8 - 7 + 4 - 4 + 38−8−7+4−4+3

Multiply. (−4)(2)(−7)(−9)( - 4 ) ( 2 ) ( - 7 ) ( - 9 )(−4)(2)(−7)(−9)

Multiply. (−8)(0)( - 8 ) ( 0 )(−8)(0)

Add. (−6)+1+(−9)+4+(−3)( - 6 ) + 1 + ( - 9 ) + 4 + ( - 3 )(−6)+1+(−9)+4+(−3)

Write the number in decimal form. 1.88×10−41.88 \times 10 ^ { - 4 }1.88×10−4

Compute the value of the expression. 8+(−1)+(−9)+(−9)+358 + ( - 1 ) + ( - 9 ) + ( - 9 ) + 358+(−1)+(−9)+(−9)+35

Basic Concepts

The Metric System

Measurement

Polynomials: an Introduction to Algebra

Equations and Formulas

Ratio and Proportion

Graphing Linear Equations

Systems of Linear Equations

Factoring Algebraic Expressions

Quadratic Equations

Geometry

Right Triangle Trigonometry

Trigonometry With Any Angle

Basic Statistics

Binary and Hexadecimal Numbers

Filters

Divide. $( - 20 ) \div ( - 4 )$

Perform the indicated operations and simplify. $\left( \frac { - 4 } { 5 } \right) \div \left( - 8 \frac { 1 } { 2 } \right) - \left( \frac { 2 } { - 5 } \right)$

Divide. $( + 153 ) \div ( - 9 )$

Perform the indicated operation. $- ( 2 ) - ( 6 )$

Perform the indicated operation. $\left( 2 \times 10 ^ { - 6 } \right) \left( 7 \times 10 ^ { - 10 } \right)$

Compute the value of the expression. $- 19 + ( - 1 ) + ( - 3 ) + 15$

Perform the indicated operation. $( 13 ) - ( - 5 )$

Add. $14 + ( - 2 ) + ( - 8 ) + 19 + ( - 3 )$

Perform the indicated operation. $( + 40 ) - ( - 90 )$

Write $3.5 \times 10 ^ { 4 }$ in decimal form.

Perform the indicated operation. $( - 6 ) - ( - 7 ) - ( + 7 )$

Find the sum. $- 60$ $\underline { \quad30\quad}$

Perform the indicated operation. $8 - 8 - 7 + 4 - 4 + 3$

Multiply. $( - 4 ) ( 2 ) ( - 7 ) ( - 9 )$

Multiply. $( - 8 ) ( 0 )$

Add. $( - 6 ) + 1 + ( - 9 ) + 4 + ( - 3 )$

Write the number in decimal form. $1.88 \times 10 ^ { - 4 }$

Compute the value of the expression. $8 + ( - 1 ) + ( - 9 ) + ( - 9 ) + 35$